The table shows the number of hours, a teacher invests on his daily activities. What is the ratio between sum of time invested by the teacher on 'teaching and reading' & 'sleep and play'?
| Teaching | 8 hours |
| Reading | 6 hours |
| Sleeping | 7 hours |
| Playing | 1 hours |
| Other activities | 2 hours |
Answer & explanation
Correct answer: option 3
Time invested on 'teaching and reading' : Time invested on 'sleep and play'
( 8 + 6 ) : ( 7 + 1 )
14 : 8
7 : 4